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Finding the Fourth Proportional to 161,876.70, 223,391.13 and 90,261.34

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Solution

The fourth proportional to 161,876.70, 223,391.13 and 90,261.34 is: 124,561.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,876.70 : 223,391.13 = 90,261.34 : x
  2. Step 2: Convert to fraction form
    161,876.70/223,391.13 = 90,261.34/x
  3. Step 3: Cross multiply
    161,876.70x = 223,391.13 × 90,261.34
  4. Step 4: Simplify right side
    161,876.70x = 20,163,582,737.91
  5. Step 5: Solve for x
    x = 20,163,582,737.91/161,876.70
  6. Step 6: Final answer
    x = 124,561.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.